Indicator



APPLICATION FILED JUNE Ac. M. nEMlNG.

INDICATOH.`

22, i916. RENEWED SEPT.29| |920.

Patented May3, 1921.

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CHARLES M. DEMING, OF DAYTON, OHIO.

Application filed lune 22, 1916, Serial No. 105,1?7.

T0 all wwm it may concern.'

Be it known that I, CHARLES M. DEMING, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Indicators, of which the following is a specification.

rlhis invention relates to indicators, the object of the invention being to provide an article of this character which is susceptible of ready manipulation and by which deviations in work being gaged can be quickly and precisely shown.

In the drawings-accompanying and forming part of the present Aspecification I have shown in detail certain convenient forms of embodiment of the invention which I will set forth fully in the following description. I do not restrict myself to this disclosure;

I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure l is a top plan view of an indicator involving the invention.

Fig. 2 is a side elevationof said indicator. v Q y Fig. 3 is a longitudinal section of the same showing in elevation part ofan at# taching shank. v Y

Fig. a is a top plan view of a lathe show ing the' indicator in cooperative relation therewith.

Fig. 5 is a top plan view of the feelerl member and needle, and gage member, the latter being in dotted lines, and the feeler member and needle being shown 'by dotted lines as moved in one direction `fromthe normal neutral point. K' f Fig. 6 is a top plan view ,partly in section of the body and gage members, the front portion of the body member being brokenaway, the feeler member being omitted and the needle shown by dotted lines to an adjusted neutral position.

Fig. 7 is a detail view in top plan partly in section of the( rear portion of the body member, of part of the needle and certain coacting elements.

Figs. '8 and 9 are details of nose pieces.

F igs.v 10 and 1l are detail views of the forward portion vot a modified form of feeler with dierent kinds of nose pieces connected therewith.

Like characters refer to like parts through* Specification of Letters Patent.

INDICATOR. l

Renewed September 29, 1920. Serial No. 413,636.

out the several views which are on diderent.

`laterally which is obviously more advantageous than one which moves endwiseor longitudinally. The nose or tip end of this feeler member can be applied to the work in any convenient manner, depending upon the nature of the work. The work, as will vbe obvious, may be any shape, that is to say it may be flat or round or a combination of the two, or it maybe of such kind as may require internal'gaging or on the other hand external gaging. The invention, however, does not concern the character of work to be gaged, for the indicator can be employed in any connection in which those of the vordinary type are used. Hereinafter I will describe one of the large lnumber of modes of utilizing the implement.

rlhe device includes in its construction a body portion such as that denoted in a general way by 2. The manner in which the body portion is mounted depends upon the use to which the article is to be put. In Fig. 4: the indicator is shown mounted upon a lathe, and I Awill first brieiiy describe the principal parts of this machine and then a way in which the indicator of which the body 2 forms a part can'be connected thereto. VSaid lathe has a bed 3, the head-stock of which is equipped with a spindle e, said bed having ways to receive Patented May 3, 1921.,

The indicator Vhas as a part of it the slide 5 equipped with the toolpost 6 adapted to receive the shank 7. This shank is shown furnishedat its inner end with a proyection 8 rising therefrom, threaded at in the underside of the bodyY v2 substantially centrally of the length thereof. As

.will be clear this is merely one of several simple ways of mounting the body 2. Asy

of the spindle t. In this particular showing its upper end to lit the threaded socket 9 the work 10 rotates with the spindle and with the feeler member hereinafter described in contact with its periphery. Where the interior of work is to be gaged, the nose or tip of the feeler member would be introduced into the work. In some cases the work will remain at rest while the feeler member will be revolved or moved relatively to it. These are, however, details of use and need not be discussed at length, for as I have already observed, it is only necessary to show one method of using the device.

Said vdevice'includes a feeler member such as that denoted in a general way by 11. As already noted this feeler member is laterally movable, and the best effects I obtain by pivotally mounting it and preferably in such manner as to secure a long arm and a short arm, the short arm being adapted to directly engage the work to be gaged, While the long arm has a suitable operative connection with a needle, pointer or equivalent element. By reason of this pivotal mounting of the feeler member and the variationsV in length of its two arms, that part of the feeler member which engages the work has but a very small movement which is multiplied in the needle, owing to the fact that the needle is connected with the long arm or branch of the feeler member. The feeler member shown in Figs. 1 to 3 for instance, involves a main section as 12 and an auxiliary section or nose piece as 13, the shank of the nose piece being removably fitted in a socket in the front end of the main section 12, so that a nose piece ofidifferent kind can be substituted for that illustrated. As shown the terminalor work engaging part of the nose piece is spherical as denoted by 14, although this is merely one of several different kinds of tips. The main section 12 of the feeler member is pivotally v mounted. The body 2 at'the forward end and on the upper sine thereof has a bridgepiece 15 from which the projection 16 extends forward, this projection 16 being complemental to the projection 17, the two projections presenting` a fork to receive the enlarged part 18 of the feeler member 11, this enlarged part receiving the coaxial pivot screws 19. The two screws jointly constitute a convenient pivotal mount for the feeler member or lever 11. The main section 12 of the feeler member extends under the bridge-piece or arch 15, being flattened practically its entire length back of the arch. The under flattened surface of the feeler member is contiguous to the corresponding upper surface of the body 2. Said body 2 just back of the sides of the arch or bridgepiece 15 has the upward extensions 2O in transverse alinement, these extensions being a little higher than the thickness of the flattened part ef the main section 12. Said extensions 2O constitute a convenient support erly graduated scale on its upper or exposed Y surface. It may be mounted in any desirable manner. It abuts against the back of the arch 15 and may be welded to said arch and also to the upper faces of the two side extensions 20. It will be clear on reference to Figs. 1, 2 and 3, that the forward arm of the feeler lever 11 is considerably shorter than the rear arm, and this together with the manner in which the long arm is connected with the needle hereinafter described, gives to said needle a considerably greater angular movement than theshort or forward arm of the feeler lever.

Cooperative with the gage member 21 is a needle as 22. This needle ory pointer tapers from its butt toward its free end, the latter being adapted to traverse the scaled part of the gage member 21. The mount of this needle or pointer will be hereinafter described. It has a normal neutral position as shown in F ig. 1 at which point 'its free end is exactly over the center graduation of the scale, the needle being movable oppositely from this neutral position in accordance with the direction of movement of the feeler member 11. In addition to this normal neutral position there are two shiftedv or adjusted neutral positions as shown in Fig. 6, and these are obtained by a relative adjustment of the gage lmemberand the needle, the best effects being obtained by the adjustment of the needle, although this may not be required in all cases, for obviously the function in questionmight be otherwise secured. The body 2 at its rearfend is shown provided with a loop 23, the lower part of the loop extending slightly below the body while the upper part of the loop is arched over by the body. Trapped through the top and bottom of the loop are coaxial cone-pointed screws 24 which ft conical seats in the butt part 25 of the needle from which, as will be evident, the latter has a swinging movement.

The effect of the feeler member 11 is transferred to the needle in any desirable way. As illustrated the rear part of the feeler has a slot 26 open at its outer end to receive the depending. pin 27 of the needle, this pin being as shown comparatively close to the center of oscillation of the needle and naturally at a point removed from the axis of swing of the feeler member, by reason of which the increase in motion of the tip of the needle with respect to the tip of the feeler member is obtained.

The feeler memberand the needle are Whetherit be the normal neutral position` normally maintained in` neutral position of the needle or the shifted or adjusted position thereof in some desirableway, and spring means, one advantageous form `of which will belhereinafter set forth, answer satisfactorily in this connection. ln the rear upper surface of the'body is shown :a 4cavity or chamber 28 across 4the upper open side of which the feelerandfneedleswing. This chamber or cavity presents a convenient means for .receiving the needle-controlling spring means. While two springs as 29 and 30.are shown and are advantageous, it will be' clear that one spring or spring means of a different type might be substituted. The two springs are in parallelism and are spaced apart a .distance to-receive between them the pendent pin 27 of the needle, the two springs jointly acting .to hold the needle in its normalneutral position as shown for instance by full 'lines in Fig. 5. The springs are bent toward-each other, their shanks fitting face to face and snugly in a notch 31 in the upper side of the body 2 leading forwardly from the rear wall of the cavity 28. The two'springs are shown occupying their normal position by full lines in Fig. 6. a They are under tension, and-their effects are applied equally tothe pin 27 to thus yieldingly holdsaidl needle in the normal neutral position.

It will be supposed that the spherical tip 14 of the feeler 11 is applied to the work y10 and thatthe'latter is turning owing Vto the .rotation of the spindle 4. Should there be an error of projection on Athe work, this will cause the feeler 11 to swing. outward in the direction of the arrow. in Fig. 5, thus through the'described parts swingingthe needle 22 to the dotted line position in Fig. 5 or to some intermedi'ate'point in such direction, the amount of movement of .the needle depending of course,upon thel inaccuracy of the work..v .When the inaccuracy is passed, the spring -30 acting against the` pin 27 returns the needle to its normal neutral position. Should the inaccuracy be below the parts 'are oppositely moved, the needle in this case moving from its neutral position shown in Fig. 5, owing to the cor` responding upward 4movement of the tip of the feeler 11.

The springs 29 and 30 `can be so operated as to effect the movement of the needle 221 to either of its adjusted neutral positionsL from the normal neutral position, one of the adjusted positions being shown by dotted lines inFig. 6.l When `theneedle is in the other adjusted position, its tip will be over the other outer graduation of the gageA member 21. To effect the action of the i springs vany convenient means may be pro- ,the free portions of the two` springs 292and 30. This diskv is .provided with a downwardly extending' central pin'35 extending through the boss-36 depending fromfthe rear endfof the body 2. Thelower project`l ing end of the pin has driven onto itthe thumb piece 37 which1may be peripherally milled and which is held-'tothe pin by the screw 38.. By rotating thejthumb 'piece 32 the pin 35 and disk I33'will be turned, s o that the :pin 34 'can be revolved vto change-the positions of the two springs L29 and 30 from their normal. VWhen the pin yor crank 34 is in normal position Aas shown by-full lines in Fig. 6 forillustration, it is intersected prac-y tically by the longitudinal .aXis of the bod i 2; Byxturning'the thumb'. piece orhead to carry .-the pin 34 upward in Fig.. 6, `the free portion of the tensioned sp'ring30iwill be Vcorrespondingly moved, thespring v29 following the-companion springand acting against the pin 27 servingy to move thence-Y dle 22 to itsV adjusted neutral position. When the needle is inthe adjusted neutral position,; it moves-in, :indicating .along the scale of the gage member 21, and is returned to neutral solely by fthe action of the springl30. By operating the thumb piece 37 '.to swing thepin 34 downwardv to effect corresponding movement f ofl the needle, the action of the springs willl be' j exactlyi re-i versed, and'in this eventonly the spring i 29 will act to'return the needle 22 toits adjusted neutral position whenshifted through theintervention of thework.`l l

In Figs. Sfand 9 I show` a different form of nose piece. denoted by 39 `and circular, the Vshank of this nose lpiece being insert-l ible ini .the .socket vat the frontend of the main section 12. ofv the/feeler.'

This is merely one of a largevariety kof different j' types ofnose pieces: i.

l, In Figs. .10 and .1.1 the main section 12of the feeler has connected with it the pivoted part 4() perforated'. as at 41 to receive v.the`

shank 'ofthe nose piece42. The axis of movement of thepivoted member v40 is at right angles to that of the feeler member 12. The nose piece 43 may be substituted for the nose piece 42 and its shank may. extend- -throughl the perforation 41 and also into the socket 44 of the feeler' section 12'.' so'as to lock the pivoted part 40 .against movement andv thusmake the nose piece 48 in eect a rigid extension of the feeler section 12'.' l l Obviously the vdevice is extremely sensi'- tive,and as a. consequence proportionately precise; While both vthe feeler and thfe needle of whatever form they may take,may Y.

be. pivotally mounted in'any desirable manner, the cone-pointed screws are highly i satisfactory,providing not only for the delicate mounting of the parts but at the same time providing also for wear vwhich is compensated for by setting up the screws. The needle, as will be clear, constitutes a convenient indicating member. `It is conceivable, therefore, that inV some cases the gage member 2l mightbe dispensed with.

VWhat I claim is: Y

l. A device of the class described comprising a body, a feeler member, the body being provided withV pivots to mount the feeler member to present Vlong and short branches, a needle pivotally mounted at its butt, upon the body, the needle, having an operative connection vwith the long branchV of the feeler, a pair of springs of equal force supported by the body, the reeends of the springs acting against the needle, and means acting on the free ends of the springs to adjust ythe same in a plane parallel tothat of lthe swing` of the needle.

2. A device of the class described comprising a body, ya feeler member pivotally supported between its ends upon the body and having long and short branches at opposite sides of its pivotal mount,` a needle ivotally mounted at its butt'end upon the ody, the needle having an operative connection with the long branch of theffeeler,`aipair of springs of equal force mounted upon the body, the feeler having a ypin to enter between the springs and the springs acting against the; pin at opposite sides thereof and a pivotally adjustable disk in the body, the

disk having an eccentric pinto lit the space between the free portions of the springsl whereby the relative pressures of the springs -on the first-named pinv may be adjusted.

3. VAy device of the class described comprising a body portion, a feeler, means on the body portion, for supporting the feeler for swinging movement between its endsto^ present long and short branches, a needle, andV means on the body portion for supporting the needle for swinging movement, the long Vbranch of the fe'eler having aslot and the needle having a pin extending into the slot, the pin being adj acent'the axis of motion of the needle, a pair of springs mounted on the body portion of approximately equaleifect and acting against opposite sides of the pin, and a manually operable rotary disk on the body portion having an eccentric pin disposed in the space between the free portions of the springs.

branches on the feeler, a needle having Y sockets at its butt, the vbody having conepointed screws, the cones of lwhich t vthe sockets in the butt, the needle having a pin and the long branch of thek eelerhaving an open-ended slot to receive the pin, an pair oi springs of equal force, the body having a chamber in which the springs are mounted and the springs acting against opposite sides of the pin, and a rotary disk in the chamber, having an eccentric pin to lit the space between the free portions of the springs.

5. A device of the class described comprising a body,a feeler member, the bodybeing provided with coaxial cone pointed screws and the feeler member having seats to receive the cone ends'of the screws, the seats being klocated to present long` and short branches of the feeler, aneedle `having sockets at its butt, the body khaving cone pointed screws, the cones of which I'it the sockets in the butt, the needle having an operative connection with the long branch of the feeler, va pair'of springs of equal V'force supportedk by the body, the free ends of the springs acting against the needle and means to adjust the springs laterally. j f

6. A device ofthe class described comprising a body, a feeler member, the'body being providedwith` coaxial cone pointed;

screws and the feeler member having seats to receive thecone ends-of the screws, the seats being located to present long and short branchesA of the eeler,' a; needle having sockets at'its butt, the :body Vhaving cone pointed screws, the conesof which fit the sockets in the butt, the needle having an' operative connection with the long branch of the feeler, Va pair of springs of equal force supported by the body, the freeends of the'V springsacting against the needle, and means to enter between the free portions of the springs to adjust the same laterally.

In' testimony whereof-.I alix my signature in presence of two witnesses. CHARLES M. DEMING.

Witnesses: Y

L. L. MARKED, HEATH SUTHERLAND. 

